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The generator of AM EMFs consists of a battery-driven radiofrequency (RF) EMF generator connected to a 1.5 m long 50 ? coaxial cable, to the other end of which a stainless-steel spoon-shaped mouthpiece is connected via an impedance transformer. The RF source of the device corresponds to a class C amplifier operating at 27.12 MHz. The carrier frequency is AM with a modulation depth of 85±5%, whereas the modulation frequency is generated by a digital direct synthesiser with a resolution of 10-7. The treatment sequence is controlled by a microcontroller (Atmel AT89S8252, Fribourg, Switzerland), that is, duration of session, sequence of modulation frequencies and duration of each sequence can be programmed via PC over a RS232 interface. The RF output is adjusted to 100 mW into a 50 ? load, which results in an emitting power identical to that of the device used for the treatment of insomnia.
A 100-kW, dc shunt generator, connected to a 220-V main, is belt-driven at 300 r/min, when the belt suddenly breaks and the machine continues to run as a motor, taking 10 kW from t
A 200-V dc shunt motor has a field resistance of 200 and an armature resistance of 0.5 . On no load, the machine operates with full field flux at a speed of 1000 r/min with an a
i need matlab codes for the minimum cell cost method to start the initial feasible solution and the stepping stone method to find the optimum value
Considering the circuit shown in Figure (a), find the state of operation and operating point if the BJT has β = 80 and other typical values of a silicon BJT at room temperature.
Ask question #how to construct thunderstrom detector with circuit breaker.
1. Pattern recognition A synchronous sequential machine is to generate 1 on output z after the next clock pulse whenever the bit sequence on input x has exactly two 0’s in the last
Write out the General Form of Difference Equation? If the x[n] is the input and y[n] is the output of a linear time-invariant system, then an N order FIR difference equ
Q. A 100-kW, 230-V, dc shunt generator, with R a = 0.05 , and R f = 57.5 has no-load rotational loss (friction, windage, and core loss) of 1.8 kW. Compute: (a) The generato
1. Produce a fully-labelled sketch to show the components of a Direct Digital Control system. 2. State the minimum number of printed-circuit cards required to construct a basic co
WHOLE COIL WINDING
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